28822687 has 2 divisors, whose sum is σ = 28822688. Its totient is φ = 28822686.

The previous prime is 28822669. The next prime is 28822691. The reversal of 28822687 is 78622882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28822687 - 2⁷ = 28822559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28822637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14411343 + 14411344.

It is an arithmetic number, because the mean of its divisors is an integer number (14411344).

Almost surely, 2^28822687 is an apocalyptic number.

28822687 is a deficient number, since it is larger than the sum of its proper divisors (1).

28822687 is an equidigital number, since it uses as much as digits as its factorization.

28822687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172032, while the sum is 43.

The square root of 28822687 is about 5368.6764663183. The cubic root of 28822687 is about 306.6042391567.

The spelling of 28822687 in words is "twenty-eight million, eight hundred twenty-two thousand, six hundred eighty-seven".